Delivery-date: Tue, 26 Mar 2024 11:39:04 -0700
Sender: bitcoindev@googlegroups.com
Received-SPF: pass (google.com: domain of dave@dtrt.org designates 2607:fe70:0:3::d as permitted sender) client-ip=2607:fe70:0:3::d;
MIME-Version: 1.0
Date: Tue, 26 Mar 2024 08:36:45 -1000
From: "David A. Harding" <dave@dtrt.org>
To: Peter Todd <pete@petertodd.org>
Cc: bitcoindev@googlegroups.com
Subject: Re: [bitcoindev] A Free-Relay Attack Exploiting RBF Rule #6
In-Reply-To: <Zfg/6IZyA/iInyMx@petertodd.org>
References: <Zfg/6IZyA/iInyMx@petertodd.org>
User-Agent: Roundcube Webmail/1.4.15
Message-ID: <012f89763cc336cd91eec13dccefc921@dtrt.org>
Content-Type: text/plain; charset="UTF-8"; format=flowed
Precedence: list
Mailing-list: list bitcoindev@googlegroups.com; contact bitcoindev+owners@googlegroups.com

On 2024-03-18 03:21, Peter Todd wrote:
> [...] the existence of this attack is an argument in favor of
> replace-by-fee-rate. While RBFR introduces a degree of free-relay, the 
> fact
> that Bitcoin Core's existing rules *also* allow for free-relay in this 
> form
> makes the difference inconsequential.
> 
> # Disclosure
> 
> This issue was disclosed to bitcoin-security first. I received no 
> objections to
> making it public. All free-relay attacks are mitigated by the 
> requirement to at
> least have sufficient funds available to allocate to fees, even if the 
> funds
> might not actually be spent.

Could you tell us more about the disclosure process you followed?  I'm 
surprised to see it disclosed without any apparent attempt at patching.  
I'm especially concerned given your past history of publicly revealing 
vulnerabilities before they could be quietly patched[1] and the conflict 
of interest of you using this disclosure to advocate for a policy change 
you are championing.

-Dave

[1] 
https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2018-June/016100.html

-- 
You received this message because you are subscribed to the Google Groups "Bitcoin Development Mailing List" group.
To unsubscribe from this group and stop receiving emails from it, send an email to bitcoindev+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/bitcoindev/012f89763cc336cd91eec13dccefc921%40dtrt.org.